A privacy data protection method for Internet of Vehicles based on blockchain and differential privacy
A private data and differential privacy technology, applied in the field of data processing, can solve problems such as key management troubles and large consumption of computing resources, and achieve the effects of ensuring security, ensuring privacy, and protecting anonymity
Active Publication Date: 2022-04-01
NANJING UNIV OF POSTS & TELECOMM
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[0006] The purpose of the present invention is to use the data disturbance mechanism of differential privacy and the decentralization of blockchain to prevent Tampering capability, providing a privacy data protection method for Internet of Vehicles based on differential privacy and blockchain, so as to realize distributed management and protection of vehicle privacy data
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[0066] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0067] see figure 1 with figure 2 , the present invention discloses a method for protecting privacy data of Internet of Vehicles based on blockchain and differential privacy, comprising the following steps:
[0068] Step S1: Data collection: The vehicle periodically sends vehicle data sets to the RSU, and customizes privacy data access control policies and privacy preferences.
[0069] Among them, the vehicle customizes its privacy data access policy rules to co...
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The invention discloses a privacy data protection method of the Internet of Vehicles based on block chain and differential privacy, which includes the following steps: the vehicle sends the data set to the RSU, and customizes the privacy data access control strategy and privacy preference; the RSU obtains the data and After controlling the policy, record the vehicle identity information and divide the data sets marked with different privacy preferences, and store the data sets in the blockchain network; build a neural network virtual game model, and allocate privacy budgets for private data sets with different privacy preferences , to obtain the optimal privacy budget allocation results; data users provide data access requests to RSU, and data visitors authenticated by smart contracts obtain access datasets after differential privacy; access datasets after dynamically evaluating differential privacy based on twin neural networks utility to inversely regulate the privacy budget allocation process. The invention realizes precise classification of private data sets and ensures data privacy.
Description
technical field [0001] The invention belongs to the technical field of data processing, and in particular relates to a privacy data protection method of Internet of Vehicles based on blockchain and differential privacy. Background technique [0002] In the Internet of Vehicles, in order to enhance the driving experience and utilize location-based services, the data generated by the vehicle needs to be sent to the cloud platform, RSU and adjacent vehicles. In addition, smart cars need to share their location, identity and other information, but malicious users The real location and identity information of the vehicle may be found. In order to prevent information leakage, it is very important to protect the data of the vehicle. [0003] The traditional privacy protection scheme uses a centralized system with a simple structure to centrally manage vehicle information through the authoritative organization CA, but if the CA is attacked, it will bring serious data security risks....
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IPC IPC(8): G06F21/62G06N3/08G06K9/62G06F16/27
CPCG06F21/6245G06N3/08G06F16/27G06F18/22
Inventor 亓晋刘娅利许斌孙雁飞
Owner NANJING UNIV OF POSTS & TELECOMM